1. Mullite macro-needles for reinforcement of refractory castables

Abstract Ceramic macro-needles incorporation as reinforcement in commercial refractory castable was studied. Ceramic macro-needles (Ø2x20 mm) were made from kaolinite clay and gibbsite to obtain mullite as the main crystalline phase. Specimens with the ceramic reinforcement were evaluated by compression after being treated at two temperatures (815 and 1400

Cerâmica. Publicado em: 2022

2. Numerical analysis of reinforced concrete beam subject to pitting corrosion

Resumo Neste artigo é apresentado um estudo numérico sobre os efeitos da corrosão induzida por cloreto na vida útil de elementos estruturais. Um modelo mecânico bidimensional geometricamente não linear baseado no Método dos Elementos Finitos (MEF) foi desenvolvido para a análise de estruturas de concreto armado. O estágio de iniciação da corrosão

Ambiente Construído. Publicado em: 2022

3. Numerical formulation for nonlinear analysis of concrete and steel shells with deformable connections

Abstract A two-dimensional interface finite element capable of associating flat shell elements positioned one above the other was developed. The implemented interface element can physically simulate the contact between the flat shell elements and connect the reference planes of the shell elements above and below it. The formulation presented allows considera

REM, Int. Eng. J.. Publicado em: 2021-09

4. Study of the interaction of concrete walls with the foundation structure

Abstract This article presents a study of the factors that influence the mechanism of soil-structure interaction with a pilot building having concrete walls and their impact on their performance. To illustrate the studies carried out, a numerical modeling of a four-floor concrete wall pilot building was performed, subjected to vertical actions, supported by

REM, Int. Eng. J.. Publicado em: 2021-06

5. CONSTRUCTION AND TESTING OF GLUED LAMINATED TIMBER FRAMES FOR USE IN LAYING POULTRY HOUSES

ABSTRACT This study aimed to present a solution in glued laminated timber to replace frame structures built in reinforced concrete and metallic structure, which are common in agricultural buildings in western Paraná such as those destined to laying poultry house building by agricultural cooperatives. Structural behavior of frames build from Araucaria angust

Eng. Agríc.. Publicado em: 2020-04

6. Post-elastic Deformation Characteristics of Hybrid Fibre Reinforced Concrete Composites

Abstract The present study was focused on evaluating the strength and failure properties of hybrid micro-fibre concretes containing micro brass and steel fibre additions. Experimental tests were conducted on different hybrid fibre concretes containing aligned fibres in the direction of beam axis and the relative mechanical performance was compared to randoml

Lat. Am. j. solids struct.. Publicado em: 10/01/2020

7. Numerical analysis of torsional tangent rigidity of reinforced concrete waffle slab

Resumo Este trabalho de investigação científica aborda a análise da rigidez tangente à torção de lajes nervuradas de concreto armado por meio de comparações da análise numérica com resultados de ensaios experimentais, cujo cálculo foi feito no programa ATENA. Tal programa foi desenvolvido especialmente para cálculo de estruturas de concreto arma

Rev. IBRACON Estrut. Mater.. Publicado em: 13/12/2019

8. Revised formula for predicting the long-term deflection multiplier of normal and high strength concrete

Abstract High strength concrete (HSC) has found many applications in civil engineering structures such as in high-rise buildings, and bridges. The mechanical properties of HSC are sometimes different than of normal strength concrete (NSC). In particular, HSC possess lower creep strains compared to NSC. As a result, members constructed using HSC have been fou

Rev. IBRACON Estrut. Mater.. Publicado em: 13/12/2019

9. Proposal of a new system to classify possible damages in piles partially reinforced considering the results of low strain integrity tests

Resumo Os ensaios PIT para avaliação de integridade em estacas têm um custo relativamente baixo, são de rápida execução e não destrutivos. Apesar dessas vantagens, as inúmeras variáveis envolvidas e a influência de fatores externos podem tornar a interpretação dos resultados complicada. Dentre elas, destacam-se as armaduras das estacas. Em estac

Rev. IBRACON Estrut. Mater.. Publicado em: 13/12/2019

10. On the use of parameter γ z in fire situation

Resumo A seguir será apresentado um estudo sobre o uso do parâmetro γz em pórticos de concreto armado em situação de incêndio. Atualmente, não se têm resultados de investigação similar em estruturas de concreto, já que o tema não tem recebido atenção adequada. Em situação de incêndio muitas das ações horizontais deixam de ser consideradas

Rev. IBRACON Estrut. Mater.. Publicado em: 13/12/2019

11. Interfacial bond-slip relationship between Carbon Fiber Reinforced Polymer Plate and Concrete after High Temperature of Asphalt Paving Construction

Abstract The bond-slip relationship of Carbon Fiber Reinforced Polymer (CFRP) plate-concrete after the influence of high temperature action of Stone Mastic Asphalt (SMA) paving was investigated in this article. Two groups of double shear specimens with different bonding length were designed and tested. Based on the test results, the failure modes of specimen

Lat. Am. j. solids struct.. Publicado em: 25/11/2019

12. Bond strength evaluation between textiles reinforced mortar with carbon nanotubes and concrete substrate

Abstract The influence of using carbon nanotubes to improve bond strength between textiles reinforced mortar and concrete was investigated. Forty-two specimens were tested using double-shear test to evaluate the effect of various parameters such as CNTs addition, type of textile material, bond length and width, and number of TRM layers on the bond behavior.

Lat. Am. j. solids struct.. Publicado em: 25/11/2019